About: http://webisa.webdatacommons.org/311333958

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	graded cards could be found in publications such as Sports Market Report, and online
http://www.w3.org/ns/prov#wasQuotedFrom	upperdeck.com